Manual - Famco

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Chapter 8 - Troubleshooting & MaintenanceKeypad DisplayLCDLOPLORLOVLOILOX7-SegmentPLRLVLILXLProtectiveFunctionOperating Methodwhen theFrequencyReference is LostDescriptionAccording to the I/O-48 [Operating Method when the Frequency Reference isLost] setting, there are three modes: continue operation, decelerate and stop,and free run,LOP: Displayed when option frequency reference is lost (DPRAM time out)LOR: Displayed when option frequency reference is lost (Communicationnetwork fault)LOV: Displayed when ‘V1’ analog frequency reference is lost.LOI: Displayed when ‘I‘ analog frequency reference is lost.LOX: Displayed when sun-board (V2, ENC) analog frequency reference is lost.Inv. OLT IOLTThe inverter turns off its output when the output current of the inverter flowsInverter Overloadmore than the rated level (150% for 1 minute, 200% for 0.5 seconds).NTC open NTCInverter uses NC thermal sensor for detecting heat sink temperature. If thisThermal Sensormessage is displayed, the thermal sensor wire may be cut. (Inverter keepsOpenedoperating)Over Speed OSPD OverspeedInverter shuts off its output when a motor rotates at the frequency exceeding 20Hz of its max speed.MC Fail MCF M/C FailIt is displayed when input power is not applied or M/C inside the invertermalfunctions.To reset fault, Press RESET key, Close RST-CM terminals or connect input power.If a problem persists, please contact the factory or your local distributor.182
Chapter 8 - Troubleshooting & Maintenance8.2 Fault RemedyProtectiveFunctionOver CurrentProtectionCause1) Acceleration/Deceleration time is too short compared tothe GD²of the load.2) Load is larger than the inverter rating.3) Inverter turns output on when the motor is free running.4) Output short or ground fault has occurred.5) Mechanical brake of the motor is operating too fast.6) Components of the main circuit have overheated dueto a faulty cooling fan.Remedy1) Increase Accel/Decel time.2) Increase inverter capacity.3) Operate after motor has stopped.4) Check output wiring.5) Check mechanical brake operation.6) Check cooling fan.(Caution) Operating inverter prior to correcting faultmay damage the IGBT.Ground CurrentProtectionOver VoltageProtectionCurrent LimitProtection(OverloadProtection)Fuse DamageHeat SinkOverheatElectronicThermal1) Ground fault has occurred at the output wiring of inverter. 1) Investigate the output wiring of inverter.2) The insulation of the motor is damaged due to heat. 2) Exchange motor.1) Acceleration time is too short compared to the GD²of 1) Increase deceleration time.load.2) Use regenerative resistor option.2) Regenerative load at the output3) Check line voltage.3) Line voltage high1) Load is larger than the inverter rating.1) Increase capacity of motor and inverter.2) Incorrect inverter capacity selected.2) Select correct inverter capacity.3) Set incorrect V/F pattern.3) Select correct V/F pattern.1) Damaged due to over use of over current protection. Exchange the fuse.2) Damaged due to instant deceleration when motor is at an (Caution) The IGBT receives damages on manyexcessive excitation status.occasions when Fuse Open Trip occurs.1) Cooling fan damaged or an alien substance inserted.2) Cooling system has faults.3) Ambient temperature high.1) Motor has overheated.2) Load is larger than inverter rating.3) ETH level too low.4) Incorrect inverter capacity selected.5) Set incorrect V/F pattern.6) Operated too long at low speeds.1) Exchange cooling fans and/or eliminate aliensubstance.2) Check for alien substances in the heat sink.3) Keep ambient temperature under 40 ℃.1) Reduce load and/or running duty.2) Increase inverter capacity.3) Adjust ETH level to an appropriate level.4) Select correct inverter capacity.5) Select correct V/F pattern.6) Install a cooling fan with a separate power supply.External fault A External fault has occurred.External fault B External fault has occurred.Low VoltageProtectionOver Current 2Output PhaseOpenOverspeedH/W Fault1) Line voltage low.2) Load larger than line capacity is connected to line.(welding machine, motor with high starting currentconnected to the commercial line)3) Faulty magnetic switch at the input side of the inverter1) Short has occurred between the upper and lower IGBT.2) Short has occurred at the output of the inverter.3) Acceleration/Deceleration time is too short compared tothe GD²of load.1) Faulty contact of magnetic switch at output2) Faulty output wiring1) Encoder wiring error (A and B wiring switched)2) Encoder parameter setting is incorrect.3) Sub-B board or Encoder error1) Wdog error (CPU fault)2) EEP error (memory fault)Eliminate fault at circuit connected to external faultterminal or cause of external fault input.Eliminate fault at circuit connected to external faultterminal or cause of external fault input.1) Check line voltage.2) Increase line capacity.3) Exchange magnetic switch.1) Check IGBT.2) Check output wiring of inverter.3) Increase acceleration time.1) Check magnetic switch at output of inverter.2) Check output wiring.1) Check for the wiring of inverter and encoder2) Check for parameter setting of EXT-14, 15, and 16.3) Exchange inverter and encoder for a new one.Exchange inverter.183
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CAUTION• Install the inverter on
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(9) UL Marking1. Short Circuit Rati
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USER SELECTION GUIDE (iS5 SPECIFICA
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CONTROLOPERATIONProtectionDisplayEn
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Chapter 1 - Installation1.8 Control
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CHAPTER 6 -PARAMETER DESCRIPTION6.1
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Page 198 and 199: APPENDIX C- PERIPHERAL DEVICESInver
Page 200 and 201: DECLARATION OF CONFORMITYCouncil Di
Page 202 and 203: EMI / RFI POWER LINE FILTERSRFI FIL
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Manual - Famco

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